用所给动词的适当形式填空
If you had posted the letter, Joan  _____________   (receive)it last Monday.
What would you say or do if someone ____________   (call) you a fool?
If he  _______________          (not be) ill , he would have done something to help us.
If you had studied hard, you  _____________   (be)a college student now.
I am not tired. If I were tired, I ________________   (have ) a rest.
She has been away since last week. If she had been here yesterday, she  __________ (go) to see the film with us.